Claims
- 1. A heat-curable epoxy resin system comprising
- (a) at least one epoxy resin,
- (b) at least one polycarboxylic acid anhydride, and
- (c) 1,4-diazabicyclo(2,2,2)octane or a C1-C4alkyl-substituted derivative of a 1,4-diazobicyclo(2,2,2)octane as curing accelerator, and wherein a portion of the curing accelerator (c) is replaced by
- (d) a complex of BCl.sub.3 with N,N-dimethyloctylamine, and wherein the weight ratio of component (c) to component (d) ranges from 8/92 to 75/25.
- 2. An epoxy resin system according to claim 1, comprising 1,4-diazabicyclo(2,2,2)octane as component (c).
- 3. An epoxy resin system according to claim 1, wherein the weight ratio of component (c) to component (d) ranges from 40/60 to 75/25.
- 4. An epoxy resin system according to claim 1, wherein the epoxy resin is selected from the group consisting of a glycidyl ether of bis(4-hydroxyphenyl)methane (bisphenol F), of 2,2'-bis(4-hydroxyphenyl)propane (bisphenol A), and a mixed glycidyl ether of bisphenol A and bisphenol F.
- 5. An epoxy resin system according to claim 1, which contains an anhydride of an aromatic or cycloaliphatic polycarboxylic acid.
Priority Claims (1)
Number |
Date |
Country |
Kind |
720/94-3 |
Mar 1994 |
CHX |
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Parent Case Info
This is a continuation-in-part of application Ser. No. 08/399,687 filed Mar. 7, 1995 abandoned.
US Referenced Citations (4)
Number |
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Date |
Kind |
2890195 |
Phillips et al. |
Jun 1959 |
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3784647 |
Fleming et al. |
Jan 1974 |
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3793247 |
Fleming et al. |
Feb 1974 |
|
4663072 |
Cheung |
May 1987 |
|
Foreign Referenced Citations (5)
Number |
Date |
Country |
0254255 |
Jan 1988 |
EPX |
033456A |
Sep 1989 |
EPX |
2102183 |
Aug 1971 |
FRX |
1520206 |
Oct 1969 |
DEX |
8703592 |
Jun 1987 |
WOX |
Non-Patent Literature Citations (4)
Entry |
Derwent Abstracts 89-109370/15, "Epoxy Resin Composition for Casting and Sealing". |
Lee and Neville, "Handbook of Epoxy Resins", McGraw Hill Inc. (1967), pp. 9-3. |
Vol. 13, No. 249 (C-605) 9, Abstract of JP-A-01 054 022, Jun. 1989. |
Derwent Abstract, 89-109370/15 (JP-A-Sho 01/054022 (1987). |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
399687 |
Mar 1995 |
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